Locomotive structure



Jan. 23, 1934.

E. G. HALLQLJlsT ET Al,

LOCOMOTIVE STRUCTURE Filed April 11, 1932 5 mz r a j m M u, fa f mi w www M6 Mm /m @M5 @wf \4 4 ,M

sionally result in damage.

Patented Jan. 23, 1934 pNiTso STATES /A'rsNT osi-lcs 1,944,427 Locolviorivs STRUCTURE Einar G. Hallquist,

Edwardsville, Ill.,

and

Williamv C. Krautheim, St.y Louis, Mo., assignors to General Steel Castings Corporation, Granite City, Ill., a corporation of IDelaware Application April 11, 1932. Serial No. 604,392 16 Claims. (Cl. 1'05-44) which extend from the cylinders and valves inwardly and upwardly through the saddle into the smoke box above. The cylinders, valve chambers, steam passages and immediately adjacent parts are subjected to strains due to the heat from the steam. However, the lower parts oi the saddle are subjected to considerably less heat and tend toresist the expansion of the cylinders and steam pasages which results in the setting up of differential strains in the structure which occa- This eect may be aggravated where the entire cylinder saddle or underframe is cast as an integralunit.

The main object of the present invention is to provide a cylinder saddle construction in which the connections between the main steam cylinders and the adjacent parts of the saddle are arranged to relieve the above-mentioned thermal strains. This object and others are attained by the structures illustrated in the accompanying drawing,

n in which- Figure 1 is a vertical section taken on the longitudinal center line of a locomotive underframe illustrating the invention.

Figure 2 is a half horizontal section taken on the line 2-2 of Figure 3. y

Figure 3 is a half vertical transverse section taken on the line 3 3 of Figure 1. Y

Figure 4 is a vertical section taken on the line 4--4 of Figure 3.

The invention is illustrated as embodied in an integral cast locomotive underframe structure including a box section main frame or base member having vertical side walls 1, supplementary longitudinal walls 2, and top and bottom webs 3 and 4. The smoke box support;

.underframe.

Main steam cylinders C and steam control valve chambers 8 are located at each side of the saddle, and exhaust passages 9 extend inwardly through the walls 7 of the saddler and then upwardly and merge in a nozzle 10 which exhausts intothe smoke box (not shown). Transverse Webs 5 and 6 extend downwardly through the main portion of the underirame to the bottom web 4, and web 6 cooperates with ribs 11 and 16 toreinforce the bottom of the cylinder saddle at the center which includes center plate structure l2.

The portion 'of the underframe top web 3` abreast the cylinder saddle extends outwardly on each side beyond walls `1 and merges with the lower walls of the exhaust passages 9 and of the valve chambers 8. A substantial portion of this web between "the converging exhaust passages is cored out to lighten the structure and facilitate molding operation and the application of lagging to the steam passages. Pairs of vertically spaced horizontal webs 13 and14, the latter forming continuations of underframe bottom web 4, also project sidewardly from walls l and merge with and support main steam cylinders C. Webs -13 are extended inwardly beyond side walls 1 tol form horizontal reinforcing ribs 15 which extend forwardly and rearwardly beyond the endsof the cylinders and reinforce the walls 1 betweenfthe top and bottom webs of the underirame.V

' Extensions 5d and 6a of transverse Webs 5 and 6 project from walls l between horizontal webs 3 and 13 'and merge with these webs and with they valve chambers 8 and the upper parts Vof the main steam cylindersV C. The lower parts of transverse webs 5 and 6 beneath rib 15 terminate at each side wall 1 and the space between ribsy 13 and 14 and cylinder C and the lower part of wall 1 is'left open from end to end, as clearly illustrated in Figure 4.` The connection of the upper of the cylinder sup-` portinghorizontal webs with the underframe intermediate the top and bottom webs of the underframe instead of in alinement with one of these facilitates iiexing of the underframe side wall during thermal expansion and contraction of the cylinder. Ribs l5, while strengthening the connection, do not materiallyresist this flexing.

. The provision of a pairof vertically spaced horizontal webs between the main steam cylinders and the adjacent underframe sidewalls and the elimination of vertical end members between these horizontal connections substantially lessen the strains created in the adjacent lower part of the underframe, and accordingly the resulting danger of injury to the structure due to the forces mentioned is less than in previous types of cylinder connections. The elimination of the end members between the horizontal connections also simplies the coring and molding operations.

Obviously, the invention is not limited to the exact details of the embodiments illustrated, but the essential features thereof may be utilized in other types of structures such, for instance, as that in which the cylinder saddle is composed of separately formed units secured together by suitable means. The exclusive use of this and other modifications within the scope of the appended claims is contemplated.

What is claimed is:

l. A locomotive saddle structure including a side Wall, a main steam cylinder adjacent said wall, and a connection between said wall and said cylinder including vertically spaced members exy tending substantially the length of said cylinder,

the space between said members being open from end to end. i

2. A locomotive saddle structure comprising a base member, a cylinder at the side of said member, and a connection between said cylinder and member, said connection comprising vertically spaced longitudinal webs, there being an opening extending the length of said connection from web to web and from the cylinder wall to the side of said member.

v 3. A device as dened in claim 2 comprising an integral structure. Y

4. A locomotive saddle structure comprising a base part, a cylinder at the side thereof, a connection between said cylinder and part including vertically spaced longitudinal webs, the space between said webs being unobstructed for the length of the cylinder, vertical transverse` walls between said cylinder and member and extending upwardly from the front and rear portions ,i of the upper of said horizontal webs, and a horizontal ange extending outwardly fromthe upper portion of said part and between the upper portions of said transverse walls.

5. In a structure as dened inclaim 4, a steamy chest located above said cylinder, a steam pas-V sageway extending inwardly from said steam chest, the bottom-wall of said passageway merging. With said flange.

"6. A locomotive saddle structure including a side wall, vertically spaced steam chambers adjacent said wall, a pair o1" longitudinal webs directly connecting the lower chamber and said wall, a horizontal web connecting the upper chamber and said wall, and vertical webs extending between the ends of said latter-mentioned horizontal web and the higher of said pair, the space between said pair being open from end to end.

7. In a locomotive saddle structure, a base member including a side wall, spaced vertical webs extending across said member, a main steam cylinder and a valve chamber adjacent said wall, and a plurality of horizontal webs connecting said cylinder and chamber with said wall, the portions of said vertical webs abreast the upper two of said horizontal webs extending beyond said side walls and merging with said chamber and said cylinder, and the lower portionsof said webs terminating at said side walls, the. space between the lower two of said horizontal webs being open from end to end.

8. An integral cast metal locomotive underframe structure comprising a. box section cylinder saddle member having side and end walls, main steam cylinders and valve chambers adjacent said side walls, and a plurality of vertically spaced horizontal webs connecting said cylinders and chambers with said side walls, said cylinders merging with the lower two of said webs and the space between said lower webs being open from end to end, and said end walls extending beyond said side walls between the upper two of said horizontal webs and merging with said chambers and the upper portions of said cylinders.

9. A locomotive saddle structure comprising a base member having a side wall, a cylinder adjacent said wall, and a connection between said cylinder and wall including vertically spaced longitudinal upper and lower webs, said lower web being located at the same level as the bottom of said member, and said upper web being located intermediate the top and bottom of said member, the space between said webs and between said side wall and said cylinder being free of obstruction and said side wall being flexible with said upperweb to facilitate expansion or" said cylinder and connection without excessively straining said base member.

l0. A structure as specified in claim 9 including a longitudinal horizontal reinforcing rib adjacent said cylinder and extending inwardly from said side wall and located at substantially the same level as Vsaid upper horizontal web.

11. An integral cast metal locomotive underframe structure including a box-section cylinder saddle having side walls, main steam cylinders, and a pair of verticallyv spaced longitudinal webs connecting each cylinder with said saddle, the space between each pair being open from end to end to relieve stresses in said saddle and thelower web merging with the lower edge of said side wall and the upper web terminating a short distance inside said side wall and forming a bracing rib.

12. In a locomotive underframe structure, a base member including a saddle, a main steam cylinder and a valve chamber adjacent said saddle, a steam passage extending` from said chamber into said saddle, and a connection between said cylinder and chamber and said member, said connection including a plurality of vertically spaced horizontal webs, only the lower two ofsaid webs merging with said cylinder, and portions of the walls of said passage merging with the other of said webs.

13. A locomotive saddle structure including a box-shaped base part, main steam cylinders at the sides of said par-t, the front and rear walls of said part merging with said cylinders, and pairs of vertically( spaced web members connecting said cylinders from the side walls of said part, one of said members on each side intersecting the side Wall and formingY an internal rib intermediate the top and bottom webs of saidpart and said-ribs being shaped t0 permit iiexing of said side walls.

14. In a locomotive underframe structure, a

basev part including a side wall, a cylinder member adjacent Ysaid wall, and a pair of vertically spaced longitudinal webs connecting said cylinder and said wall, the upper of said webs being intermediate theupper and lower edges of said wall and terminating a short distance insideV the same to form a shallow reinforcing rib.

15. A locomotive saddle structure including a base part having a side wall, a steam cylinder outwebs between each cylinder and the adjacent side Wall of said member and transverse vertical walls connecting said cylinders, the upper of said webs being intermediate the top and bottom walls of said member and terminating'between said transverse Walls in shallow reinforcing ribs, said transverse Walls constituting the sole connections between said ribs in line with said cylinders.

EINAR G. HALLQUIST. WILLIAM C. KRAUTHEIM. 

